wuhayshi who was once the personal secretary to osama bin laden runs the yemen-based branch of al qaeda that has proven to be the most agress any of plotting against the u.s. his group, aqap is home to an explosive expert who over the past two years has targeted u.s.-bond airplanes with bombs hidden inside of underwear. and computer printers. aqap has been battered by drone strikes. deputy commander saeed al shihri was killed earlier this year. but counterintelligence officials warn that aqap remains dangerous and capable of inflicting serious damage. while u.s. officials were stunned that veteran al qaeda leaders broke operational security by openly discussing intelligence plots, the intelligence remains incomplete. analysts who worked throughout the weekend still can't say when, where or how an attack may be carried out. so the u.s. has been forced into a blanket defense across north africa and the middle east, 19 u.s. diplomatic missions will remain closed through saturday. and while there is no indication that terrorists are targeting the u.s. mainland, security is being tightened a